Home / 7,427.72-11,142.81-3,530.81

Finding the Fourth Proportional to 7,427.72, 11,142.81 and 3,530.81

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Solution

The fourth proportional to 7,427.72, 11,142.81 and 3,530.81 is: 5,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.72 : 11,142.81 = 3,530.81 : x
  2. Step 2: Convert to fraction form
    7,427.72/11,142.81 = 3,530.81/x
  3. Step 3: Cross multiply
    7,427.72x = 11,142.81 × 3,530.81
  4. Step 4: Simplify right side
    7,427.72x = 39,343,144.98
  5. Step 5: Solve for x
    x = 39,343,144.98/7,427.72
  6. Step 6: Final answer
    x = 5,296.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.